11311011421428 has 12 divisors (see below), whose sum is σ = 26392359983360. Its totient is φ = 3770337140472.

The previous prime is 11311011421427. The next prime is 11311011421483. The reversal of 11311011421428 is 82412411011311.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11311011421395 and 11311011421404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11311011421427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471292142548 + ... + 471292142571.

Almost surely, 2^{11311011421428} is an apocalyptic number.

It is an amenable number.

11311011421428 is an abundant number, since it is smaller than the sum of its proper divisors (15081348561932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11311011421428 is a wasteful number, since it uses less digits than its factorization.

11311011421428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942584285126 (or 942584285124 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 30.

Adding to 11311011421428 its reverse (82412411011311), we get a palindrome (93723422432739).

The spelling of 11311011421428 in words is "eleven trillion, three hundred eleven billion, eleven million, four hundred twenty-one thousand, four hundred twenty-eight".